1157171103 has 48 divisors (see below), whose sum is σ = 1910877696. Its totient is φ = 693930240.

The previous prime is 1157171087. The next prime is 1157171111. The reversal of 1157171103 is 3011717511.

1157171103 is a `hidden beast` number, since 11 + 571 + 71 + 10 + 3 = 666.

It is not a de Polignac number, because 1157171103 - 2⁴ = 1157171087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157171153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 257050 + ... + 261512.

It is an arithmetic number, because the mean of its divisors is an integer number (39809952).

Almost surely, 2^1157171103 is an apocalyptic number.

1157171103 is a deficient number, since it is larger than the sum of its proper divisors (753706593).

1157171103 is an equidigital number, since it uses as much as digits as its factorization.

1157171103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4586 (or 4574 counting only the distinct ones).

The product of its (nonzero) digits is 735, while the sum is 27.

The square root of 1157171103 is about 34017.2177433723. The cubic root of 1157171103 is about 1049.8627494070.

Adding to 1157171103 its reverse (3011717511), we get a palindrome (4168888614).

The spelling of 1157171103 in words is "one billion, one hundred fifty-seven million, one hundred seventy-one thousand, one hundred three".